Wiltpruf use/ damage?

Who uses Wiltpruf ? What is it useful for besides the usual evergreens, and what damage could it cause to deciduous fruit trees or bushes? I have been thinking of this, looking at preventing moisture loss on plants I can’t move. I plan on watered-down latex paint on trunks. Would Wiltpruf help in spring, with variable temperatures?

I’ve never heard of it so I looked it up:

Wilt-Pruf is purified organic pine resin to which emulsifiers and stabilizers are added.

I’ve used wiltpruf as a sticker for Bordeaux mixture.
(For preventing peach leaf curl). It works well.
As far as it’s efficacy for preventing cold damage: I don’t know. I got lots of damage this winter.